Door-knob



(No Model.)

C. REBSTOGK.

DOOR KNOB.

Patented Mar. 13,1883.

N. PETERS Phowumogmpher, Winningen, D, C.

UNrTn STATES CHRISTIAN REBSTOCK, OF BRIDGEPORT, ASSIGNOR TO HIMSELF, AND CHARLES DIETTEELIN, OF NEW HAVEN, CONNECTICUT.

KNOB.

SPECIFICATION forming part of Letters Patent N0. 273,893, dated March 13, 1883,

Application tiled July 22, 1882.

To all Iwhom it may concern Be it known that I, CHRISTIAN REBs'rocK, ot' Bridgeport, in the county ot' Fairfield and State of Connecticut, have invented certain new and useful Improvements relating to Door-Knobs, of which the following is a speciication.

I make a highly-decorative knob at small cost. It has a transparent front with a metallic back and a strong metallic frame with suitable illing. Within the front, which is ot' glass or other transparent material, I place any desired decorative device or material. I give the preference to distinctly-printed matter, either a word, letter, or picture.

The following is adescription of what I consider the best means of carrying out the invention.

The accompanying drawings form a part of this specitication.

Figure 1 is aface view. Figs. 2, 3, &c., show a construction involving a portion of the invention. Fig. 2 is a centrallongitudina-l seotion. Fig. 3 is a side elevation ot' the shank and the broad plate or flange formed thereon. Fig. 4 is a face view of the same. Fig. 5 is a side view of the separate front plate. Fig. 6 is a view of the back face thereof. Fig. 7 is a longitudinal section, showing the invention fully carried out.

Similar letters of reference indicate corresponding parts in all the figures.

Referring to Figs. 1 to 6, A (shown in dotted lines iu Fig. 2) is the shank or spindle, the usual square rod of iron or steel extending loosely through the door and adapted to be turned to operate the catch by ordinary connections, (not shown) being provided with a knob at each end by which it may be turned.

B B is the shank and main skeleton frame, of malleable cast-iron or other suitable material. The part B ts upon the square spindle A. The part B is a broad and strong iiange, provided with liberal openings through which a lling composition, E, may be introduced at the proper stage ot the manufacture. The

outer face of the casting B B' has a square recess, l).

C is a tubular casing, of brass, German silver, or other suitablel material, anged inwardly at one end and outwardly at the other.

(No model.)

D is a semi-spheroidal casing, of brass or other suitable material, matching closely to the outwardly-hanged end of C. The opposite and largeredge of this casing D is flanged outwardly, and applies close to the periphery of the stoutllangeorskeleton B. These parts are applied properly together and a tirin tilling ot plaster or other suitable material is introduced through the holes in the skeleton flange B.

Cr is what I term a front skeleton plate. It extends over the whole or a great portion ofthe face of B', and isvfornied with a square projection, g, which, matching in the recess b, locks the parts against turning one upon the other. There are liberal openings in the thin casting or front skeleton, G.

H is a face-piece ot' clear glass, having a hollowed back and abeveled and tlanged periphery,v as shown.

I is a slip ot' paper or brilliant metallic foil, on which has been previously produced, by printing or otherwise, any decorative or distinctive device. I have shown on Fig. l the word RebstockJ Whatever the device desired, it is produced as clearly and sharply as practicable on the front face of the slip I. The slip I is reliably held in contact with the glass H by plaster or other suitable filling applied in the hollow back of the face H.

J is a nicely-finished rim, of brass or other suitable material, spun, stamped, or otherwise brought to the form shown. The parts G H I J are held in position and a filling, K, introduced through the apertures in G- and allowed to harden. When the two portions thus separatelyY completed are applied properly together the rim J is spun over or otherwise nicely and strongly engaged with the flangedout edge of the back ease, D. In this condition the rim J connects the anged edge ot' the face-piece H with the hanged edge of the back case, I). It connects the entire front parts vwith the entire back parts ot' the knob 3 and makes the whole a unita strongly and permanently united knob and shank. This may be fastened on the spindle A by ordinary means, (not represented)as, for example, a short screw with a eountersunk head inserted through the tubular casing C and shank B into a threaded hole in the spindle A.

In Fig. 7, which shows the complete form of the invention, the front skeleton plate, G g, and the parts H I J and tilling K are identical in form and construction with the corresponding parts above described, and the attaching of these important front parts to the back and main parts of the knob is effected by spinning inward the back edge of the part J the same as above described; but here the shank B is enlarged Iand chambered at the front en d to accommodate a spiral spring, M, encircling the spindle, and a transverse pin, (t, 'inserted through the latter. main skeleton B is in this most complete form made separate from the shank B and locked therewith by a square projection or tenon' on theskeleton B', engaging in a corresponding square socket in the front ot' the shank B. There are thus two engagements of the parts together by square tenon and socketthe first that of the skeleton B', with the parts in rear thereof, and the second that ofthe front skeleton plate, G, with the parts in rear thereof.

In each pair ot' knobs one is formed as in Fig. 7, and is permanently connected to the spindle A before the knob is completed. The other is formed as in Fig. 2, and is connected after the spindle is inserted through the door.

The spring M, abutting against the cross-pin a and against the bottom or' the cavity in the shank, draws the knobs strongly together and takes up all the looseness or lost motion and avoids rattling.

Modications maybe made in the forms and proportions. Parts of the invention may be used Without the whole. I can dispense with the spring M and transverse pin a, and connect both knobs to the spindle by ordinary The liange or' means. In such case both knobs may be constructed as in Fig. 2; or I can produce both knobs as shown in Fig. 7, except that the spring M and pin a, are omitted from one, and that knob is caused to receive the end of the shaft and to confine itA by a screw, The me tallic surfaces, as also the glass, may be plain or decorated. Various subdued or brilliant effects may be produced by varying the size and form of the shielded piece ot' foil or paper I. Instead of white glass, transparent material of other colors may be used for the front plate, H. I esteem it important to the proper effect that the face be polished or finished to present a perfect surface. One modilcation to which I attach some importance is to make the knob as in Fig. 7, but with the flange B in one piece with the shank B. It is not essential to the successful use of the spring M and cross-pin a, or their equivalents, that theytlange B shall be separate; but for general use I prefer toY make the parts as sho'wn.

I claim as my invention- The front skeleton, G, transparent front plate, H, shielded device I, and rim J, in combination with each other and with the main skeleton B, shank B, casings C and D, and with the spindle A, spring M, and abuttingpin a, all arranged for joint operation, as herein specified.

In testimony whereof I have hereunto set my hand, at Bridgeport, Connecticut, this 12th day of July, 1852, in the presence of two sub* scrbing Witnesses.

CHRISTIAN REBSTOCK.

Witnesses:

SAM. B. SUMNER, ERNEST L. STAPLEs. 

